Adjustable clamp-support.



R. H. WELLES.

ADJUSTABLE CLAMP SUPPORT.

APPLICATION FILED -FEB. 24. 1914.

1,182,1 23. Patented May 9, 1916.

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RICHARD H. WELLES, or KEnosHA, WISCONSIN, nssrenonro 'rnn BADGER BRASS lure- (10., or KENOSHA, WISCONSIN,"A GORBORATION or Wisconsin;

ADJUSTABLE CLAMP-SUPPORT.

I Specification of Letters Patent.

3Patented'May 9,1916.

Application filed February 24, 1914. I Serial No. 820,459.

To all whom it may concern g Be it known that I, RICHARD HQWELLES, a citizen of theUnited States, residing in the city of Kenosha, county of Kenosha, and State of Wisconsin, have invented certain new and useful Improvements in Adjustable Clamp-Supports, of which the following is a specification,

This invention relates to improvements in adj ustable-clamp supports, and refers more particularly to an adjustable-clamp support suitable for use with apparatus subjected to severe vibration.

v Among the salient objects of the invention are to provide an adjustable, interlocking clamp-connection between a pair of members, the relative angularposition of which must be capable ofcomparatively accurate adjustment; to provide] a construction in which the, relative angular adjustment may be changed at will; to provide a construction in which the two. relatively-adjustable members will be securely interlocked together against angular movement in whatever angular positions they may be adjusted, and do not depend uponfriction alone for preventing said angular movement; to provide a construction inwhich a change in angular adjustment may be made by loosening asingle clamping member, and the parts again locked together by tightening up the said clamping member; to provide an adjustable clamp which shall be simple and economical of construction; and in general to provide an improved clamp of the, character referredto. I v, The inventlon conslsts 1n the matters hereinafter described, and more particularly pointed out in the accompanying drawings, inwhich,--

Figure 1 is aside v ew of my. improved clamp-support, showing it i applied to a bicycle-lamp and the steering post of abicycle; Fig. :2 isa perspective view of a portion of the clamp, one of the elements being removed; Fig. 3 is a perspective view: of the element removed fromthe clampshown in Fig. 2; Fig. 1 is a perspective view of the portion of the clamp shown in Fig. 2, the bolt being removed; and Fig.5 is a perspective view of the clamping bolt.

Referring to the drawings, in Fig. 1, I illustrate a preferred embodiment of, my

improved clamp, whichis used for securing a bicycle-lamp in adjustable position to the steering post of a bicycle. In this view, 1 represents a portion of the steering post, '2 the steering-postclamp, which may be adusted 1n. position upon the steering post by the bolt 3. The stationary inclined bolt 4 forms an adjustable support for the arm 5 of the adjustableclamp proper, the latter havlng an inclined boss 6, through which is drilled a longitudinal hole 7 for the receptlon of the bolt 4. The arm 5 is capable of sw nging upon thebolt 1, but isintended to be locked in its permanent position by tighteningthe nut 8,-threade'd upon the lower end of the bolt,

The interlocking adjustable feature of the clamp proper will now be described. Se. curely riveted to the lamp 9 are two die- 'lar,-fiat lug.portions 12 and 13, which are spaced apart a sufficient distance to fit loosely upon either .side of the relatively stationary arm 5, which they embrace. I The right-hand lug 13 has punched in it a circular, serrated aperture 14. The other lug 12 is pro vided with a smaller circular aperture 15, axially in linewith the aperture 14 in the other lug, and large enough to admit loosely the threaded end of the clamping bolt 16. The latter has a round head 17., and a square neck portion 18 between the head and the screw-threaded end. In order to prevent the relatively small head 17 from being pulled through the aperture 14, I interpose between the lug l3 and the bolt-head a washer 19, which is somewhat largerin I by forming in the latter a rectangular slot 21 of the proper width to admit freely the squared neck portion 18. The. slot 21 is made with an open mouth in order to permit the insertion of the arm 5 without it being necessary to'remove the butterfly nut 22. Between the butterfly nut 22 and the member '12, I interpose a circular punched washer 23.

As previously described, thetwo members 12 and 13 are spaced apart a sufficient distance freely to admit the end of the arm '5; but when the clamping bolt 22 is screwed up tight, the members 12 and 13,being of resilie ent sheet-metal and relatively thin, are squeezed tightly into engagement with the sides of the end of the arm5. Thisfrictional clamping effect, however, is not alone relied upon to maintain the arm and the adjustable lugs in permanent angular position with relation to each other; this feature be ing taken care of by the clamping bolt 16, the neck portion of whch is locked against rotation'in the member 5, the lug 13 being locked against rotation upon the bolt by means of theinterlocking member 20. To adjust the lamp in a differentangular position with reference to the arm 5, the butterfly nut 22 is unscrewed a sufficient distance to permit the member 20 to move axially outward far enough to "disengage the serrations inthe aperture 14. The lamp may .then be rotated one or more teeth, as'the case may.

be. The butterfly nut 22 is then screwed up, pulling the serrated disk 20back'into en-' gagement with thenotches in the aperture l gand also clamping the ,two lugs tightly against the arm 5. J V

It'is unnecessary to go further into detail in describing the operation of'the clamp. It

will be seen that the lamp is capable of occureference to said stationary member, and a clamping member positively interlocked with said first two members against angular movement relative to said first two members, one of saidfirst two members having means interlocking with said clamping member in a pluralityof different angular positions, and slidable with reference to both'of said first two members whereby it may betempoe rarily disengaged from said member with against relative rotation, both the arm and the lug being independently locked against rotation on said bolt when the latter is tightened' i 3, The combination of a relatively-stationary supporting-arm, an adjustable member having a pair of fiat lugs on either side of said arm, and a clamping bolt keyed tosaid arm. for clampingthe latter between said lugs, one of said lugs having means for engaging said bolt in a plurality of different angular positions'with reference to said bolt and looking it against relative rotation.

4-. In a clamp, the combination of a relatively stationary supporting-arm, a lug on one side of said arm and provided with a serrated aperture, and a'clamping bolt keyed to said arm, passing through saidaperture, I

and provided with a said serrations.

'5. In av clamp, the combination of a relatively stationary supporting-arm, a relatively adjustable member having-a lug on one side of said arm, said lug beingprovided with a circular toothed aperture, and "a projection for engaging 1 clamping bolt axially slidable, but-keyed to said arm, passing through said aperture, and provided with a projection for engaging said serrations. r

6. In a clamp, the combination of a relatively stationary arm, an adjustablemember having a pair of flat lug portions on either side of said arm, one of said luglportions being provided with a circular serrated aperture, and a clamping bolt axially slidable,

but locked against relative rotation on said arm, passing through said aperture in the lug, and provided with a projection for engaging said serrations.

7. In a clamp, the combination of a relatively stationary arm, and adjustable lug member on one side of said arm provided with a circular toothed aperture, a clamping bolt slidable on said arm, but locked against rotary movement in said'arm, and having a toothed projection for-engaging the teeth in said aperture. 8. In a'clamp, the combination of a, relatively stationary. arm, an adjustable lug on each side of said arm, one of said lugs having a circular-aperture with inwardly projecting teeth formed therein, and the other lug having an aperture for the admission of a clamping bolt, and a clamping bolt pass- I ing through both of said apertures and axially slidable with reference to said arm,

but having means for preventing its rotation with reference to said arm, and engaging sald teeth. I

9. In a clamp, the combination of a rela tively stationary arm, an adjustable resilient lug on each side of said arm, said lugs being connected together a suitable distance apart normally to freely admit said arm,

one, of said lugs having a circular aperture a flat toothed member keyed to said arm, 10- With inwardly projecting teeth formed therecated Within said circular aperture and enlJ i111; and the other; lug 1having agaperture for gaging said serrations. t e ac mission 0 a c amping olt, a clamp- 5' ing bolt passingthrough both of said; aper- RICHARD WELLES' tures and axially slidable with reference to Witnesses: said arms, but having means for preventing ALBERT H. GRAVES, its rotation with referenceto said" bolt, and EMILE Rosn.

copies of this patent may be obtained for in cents each, by addressing the "Commissioner of ratenta. Washington, D. 0." 

